Sprinkler



Dec. 28 1926.

1,612,135 D. G. LORRAINE SPRINKLER Filed March 17 1924 Ill/IA VII/1 INVENTOR DA W0 6. LORRA m1:

ATTORNEY Patented fies. 28, 1926.

UNITED STATES DAVID G. LORRAINE, 013 LOS ANGELES, CALIFORNIA.

SPRINKLER.

Application flied March 17, 1924. Serial No. 699.627.

This invention relates to sprinkling systoms of the type having nozzles normally retracted below the surface to be sprinkled but adapted for automatic elevation to operative position, by the pressure of the water when the latter is turned on from a central station.

It is the object of the invention to provide a construction whereby the water will be discharged through the nozzles with minimum resistance to the flow thereof, and in an annular spray providing thorough distribution of the water, the construction including improved adjusting means whereby the spray may be regulated from a relatively heavy shower to a fine mist or fog.

It is a further object of the invention to provide means'for locking the spray adjust mg means of the nozzles, when they have been set to provide the desired spray.

It is a still further object of the invention to provide a construction arranged so as to prevent leakage of the water, thereby assuring discharge of all of the water through the nozzle heads.

It is a still further object of the invention to provide an arrangement whereby the spray nozzles may be conveniently connected to a waten main positioned just below the surface of the lawn or the like, while still providing the necessary vertical space for elevation or retraction of the nozzles, and

thereby eliminating the necessity for dig ging a relatively deep ditch when installing the sprinkling system.

The invention will be readily understood from the following description of the accompanying drawings, in' which:

Fig. 1 is a vertical section through one of the nozzles of the sprinkling system showing the same in retracted position.

Fig. 2 is an axial section through a nozzle adaptedto receive sections of the ipe line, and having a vertical opening 5 at 1ts upper side and a depending pipe 6 at its lowerside in alinement with opening 5. The ipe 6 is 60 closed at its lower end and preferab y terminates in a dpoint 7 adapted to be driven into the groun A bushing 8 is mounted in opening 5, as

by threaded connection 9, said bushing havgroove, the parts being arranged so that elevation of the nozzle is limited by abutment of packlng 12 against shoulder 10, thereby forming a leak proof joint between the nozzle and fitting 3.

The upper end of nozzle'll terminates in so a conical head 13 having a transverse enlargement 14 at its apex, and a bore 15 extending through the nozzle, opens through the lower end of the latter into pipe 6, and at its upper end terminates in a transverse bore 16 opening in opposite directions through the nozzle at the base of conical head 13. Spiral grooves 17 are formed in the head 13 and communicate at one end with the respective ends of bore 16, said grooves preferably extending approximately half way around the conical head.

The nozzle 11 is threaded below transverse bore 16, and a cap 18 is received over the head of the nozzle and is vertically adjustable relative thereto, by means of a threaded connection 19 between the lower portion of the cap and the threaded end of the nozzle. The upper portion of cap 18 forms an annular space 20 surrounding the conical head of the nozzle, said annular space being closed by the end 21 of the cap which is provided with a restricted central o ening 22 adapted to be received over the en argement 14 at the end of the conical head.

The end 21 of the cap preferably tapers to a reduced thickness from its periphery to its central opening 22, and it will be. noted that vertical adjustment of the cap relative to the nozzle, will increase or decrease the annular space between conical head 13 and the opening 22 so as to regulate the discharge of fluid trom the nozz e. v The cap 18 may be locked in ad usted position on the nozzle, by means of a lock nut 23 having threaded engagement 24 w th the threaded end of the nozzle below said cap, in order that said nut may be screwed up tight against the under side of the cap.

The parts are sotarranged that when water is shut ofl from pipe 1, nozzles 11 will drop bygravity to telescoped position in pipe 6 as shown in Fig. 1, so that said nozzles are below the surface of the lawn. As

soon as water is allowed to flow through pipe 1 into pipes 6, the pressure of said water a ainst the enlargements 11 of the nozzles,

will elevate the latter to the position shown in Fig. 2, with the upper ends Of-Sfi-ld. nozzles above the surface of the lawn.

The water will flow through bores 15 and 16 of the nozzles, and thence into the annular spaces 20 in caps 18, the spiral. grooves 17 rotating the water, and th'e passage between restricted opening 22 and the upper end of the conical head allowing discharge of the water against enlargement 14, so as tainted conduit, a fitting in said conduit having an opening at its upper side and a hollow membei depending from its lower side in vertical 40 alinement with said opening, said hollow member being closed at its lower end and forming a tapering spike adapted to be driven into the round for anchoring said fitting and said uid conduit below the surface of the ground with said opening in alinement with a bore extending from the surface of the ground to said opening, a bushing in said opening, a pipe in said fitting'projecting through said bushing and 5 normally telescoped in said hollow pipe below the surface of the ground, a nozzle on the upper end of said pipe, an abutment surface at the lower end of the nozzle pipe adapted to be impinged by fluid flowing through said hollow member and said nozzle pipe tor elevating the latter into operative position above the surface of the ground, and a shoulderon the nozzle pipe engaging the bushing for limiting elevation to of the nozzle pipe.

2. A sprinkling system comprising a fluid conduit havin a depending off-set forming a tapering spike adapted to be driven into the ground, and a nozzle pipe fitting loosely in said off-set and normally telescoped therein, and having an abutment surface adapted to be impinged by fluid flowing through said off-set and said nozzle pipe, for elevating the latter into operative position off-set.

In testimony whereof I have afiixed my signature to this specification.

' DAVID G. LORRAINE.

above said 

